Ensure At Walgreens

I bought 3 6 packs of ensure on sale for 7.99 each. I used 3 coupons for 3$ off one pack(printed from ensure.com). When you buy 3 packs this week you receive a 10$ register reward. And I submitted to mobi save for a 2$ refund so I paid 14.97 out of pocket and received a 10$ register reward and a 2$ mobi save credit bringing my total to 2.97. Paid just under 1$ for each pack